Correspondence, manuscripts, notes, and printed materials of Georgiĭ P. Benningsen, brother of E.P. Benningsen and, in the emigration, an associate of Vladimir Burt︠s︡ev. Much of the correspondence consists of letters to Georgiĭ Benningsen by Burt︠s︡ev (69 letters from the 1920s). Manuscripts include Benningsen's memoirs about Burt︠s︡ev, copies of Burt︠s︡ev's (apparently published) memoirs, and notes. Printed materials are chiefly clippings on various topics. There are also scattered issues of 1917 Russian newspapers ("Nash Vek," "Russkoe Slovo"), and an autographed copy of Burt︠s︡ev's 1919 edition of Griboedov's "Gore ot uma."

Correspondence, manuscripts, photographs, documents, subject files and printed materials of Sergei Grigor'evich Svatikov (1878/1880?-1942), Russian lawyer, historian, publicist, and public figure. The correspondence includes letters from Mark Aldanov, Vladimir Burtsev, Ivan Efremov, Georgii Grebenshchikov, Grigorii Lozinskii, Sergei Mel'gunov, Nikolai Rubakin, George Vernadsky and Mark Vishniak. There is a notebook that belonged to Vera Zasulich. Among the photographs are pictures of Prince Adam Jerzy Czartoryski, Sergei Mel'gunov, and Aleksander Wielopolski. The manuscripts include several by Svatikov as well as many notes, lists and bibliographical compendia relating to his oeuvre. The subject files cover such areas as the Russian Reading Hall in Heidelberg, the Turgenev Library in Paris, and the Russkii akademicheskii soiuz (Groupe academique russe), also in Paris. The printed materials include clippings, materials from the Institute d'ʹetudes slaves, and a number of books by Svatikov.